Lcrd16 relay driver, Page 2 of 2 – Pathway Programmable Relay Driver -# LCRD16 User Manual

Page 2

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rev5 ver1.0

NOTES ON MASTER SWITCHES

NOTES ON DMX OPERATION

LCRD16 RELAY DRIVER

PAGE 2 OF 2

Program Patch:

DS-5 OFF, DS-6 OFF, JP1 open

The address switches set the equivalent DMX channel #
(001 to 512) and the relay switches select the output
number (01 to 16). Pressing the program store
pushbutton (S6) to store the patch assignment will cause
the program (PROG) LED to flash once unless an
incorrect DMX # or relay # has been selected.
NOTE:

Address 000 is used to clear the patch

assignment for the selected relay. Each relay can be
assigned to only one DMX channel. A new assignment for
an relay overwrites the previous assignment for that relay.

Clear Patch:

DS-5 OFF, DS-6 OFF, JP1 shorted

The entire patch will be cleared when the program
pushbutton is pressed. The "PROG" LED will flash once
to indicate a successful execution.

Program Master Sw.A:

DS-5 ON, DS-6 OFF, JP1 open

The RELAY# switches select the device number to
connect. The program (PGM) pushbutton is pressed to
execute. The “PROG” LED will flash once unless an
incorrect relay number has been selected. The “TEST”
LED will illuminate to indicate that the selected relay has
been assigned to the switch input. Repeat this procedure
to add additional relays to this switch.

Program Master Sw.B:

DS-5 OFF, DS-6 ON, JP1 open

Follow the same procedure as above for Master Switch A.
Verify: To check the connection between a master
switch and an assigned relay, set the RELAY# switches
to the desired relay and the connect status will be
indicated by the "TEST" LED (ON if connected, OFF if not
connected). To set or clear the connection, simply toggle
the program button. Each master switch can be
connected to any combination of valid relays. Master
switches can only be tested while in the program mode.

Clear Master Sw.A:

DS-5 ON, DS-6 OFF, JP1 shorted

Press the program pushbutton to clear all relay
connections to master switch A. The "PGM" LED will flash
once.

Clear Master Sw.B:

DS-5 OFF, DS-6 ON, JP1 shorted

Press the program pushbutton to clear all relay
connections to master switch B. The "PGM" LED will flash
once.

PROGRAMMING

NOTES ON CONTROL MODE

Patch Mode Operation:

Addressing is determined

by the programmed DMX patch assignment for each
relay. In this mode, any relay can be assigned to any
DMX channel # in any order. Any number of relays can be
assigned to the same DMX channel, but each relay can
be assigned to only one DMX channel.
Offset Mode: The card's start address is determined by
the DMX address select switches (S1-S3). These
switches select the DMX address for the first relay and all
other relays controlled by the card follow in sequence.

2

RUN (NORMAL) MODE CHECKLIST

• JP1 is removed

• DS-1 set for correct relay type

• DS-2 set for relay operating threshold

• DS-3 set for scan or simultaneous relay operation

• DS-4 set for patch or offset address mode

• DS-5 and DS-6 (program select) turned off

• DS-7 (program mode) and DS-8 (test mode) are off
• JP2 and JP3 (DMX Terminate) installed or removed

as required

When a DMX signal is used to control relays, on or off
operation occurs as signal levels pass through the
threshold set. If the DMX signal fails while relays are in
the ON state, those relays will turn off after a two minute
timeout unless they were previously turned on by a

Master switch inputs function in a "highest level takes
precedence" (HTP) mode of operation with the DMX
signal. If the DMX level for a given relay is above the set
threshold, the master switch will not turn that relay off.
Similarly, lowering the DMX signal for a relay will not turn
that relay off if a master switch has previously turned it
on. This function allows the user to pre-set relays to the
ON state prior to lowering or shutting off the DMX signal.
In the absence of a DMX signal, the A and B master
switches will operate in a "last action takes
precedence" (LTP) mode, that is, either one will turn on or
off a relay assigned to both switches.

DMX data lines must always be terminated with the
proper resistance at the last receiving device on each
line. Install the JP2 and JP3 shorting jumpers if the card is
at the end of the DMX line, otherwise leave the jumpers in
the default (open) position.

DMX TERMINATION JUMPERS

The “PROG” LED is on when Program Mode is enabled.

Technical support is available from Pathway Connectivity
at +1 (403) 243-8110, Monday to Friday, from 9 a.m. to 5
p.m. Mountain time. Please have the unit model number
and serial number ready when you call. If you need to
return anything for any reason, contact the factory in
advance for return instructions.

SUPPORT

09/03

Printed in Canada

[email protected]

www.pathwayconnect.com

Pathway Connectivity Inc., 480C - 36 Avenue S.E.,
Calgary, AB, T2G 1W4 Canada
tel (403) 243-8110 fax (403) 287-1281

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